Small Main-Belt Asteroid Spectroscopic Survey, Phase II V1.0

This data set contains visible-wavelength (0.435-0.925 micron) spectra for 1341 main-belt asteroids observed during the second phase of the Small Main-belt Asteroid Spectroscopic Survey (SMASSII) between August 1993 and March 1999. The purpose of the SMASSII survey was to provide a new basis for studying the compositional diversity and structure of the asteroid belt. Based on experiences gained from the earlier SMASS survey, SMASSII focused on producing an even larger, internally consistent set of CCD spectra for small (D < 20 km) main-belt asteroids. The observing strategies and procedures used during SMASSII roughly parallel those used in the first survey (Xu et al. Icarus 115 1-35, 1995), though several minor changes were made in instrumentation and in portions of the data reduction process.

Data and Resources

This dataset has no data

Additional Info

Field	Value
Maintainer	Thomas Morgan
Last Updated	July 17, 2025, 17:02 (UTC)
Created	March 31, 2025, 23:47 (UTC)
accessLevel	public
accrualPeriodicity	irregular
bureauCode	{026:00}
catalog_@context	https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_@id	https://data.nasa.gov/data.json
catalog_conformsTo	https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy	https://project-open-data.cio.gov/v1.1/schema/catalog.json
harvest_object_id	059698cc-49db-4810-b29c-7ae570560049
harvest_source_id	61638e72-b36c-4866-9d28-551a3062f158
harvest_source_title	DNG Legacy Data
identifier	urn:nasa:pds:gbo.ast.smass2.spectra
issued	2021-05-21
landingPage	https://pds.nasa.gov/ds-view/pds/viewBundle.jsp?identifier=urn%3Anasa%3Apds%3Agbo.ast.smass2.spectra&version=1.0
license	http://www.usa.gov/publicdomain/label/1.0/
modified	2021-05-21
programCode	{026:005}
publisher	National Aeronautics and Space Administration
references	{https://pds.nasa.gov}
resource-type	Dataset
source_datajson_identifier	true
source_hash	77fe27efcdd0fe12996300cb42b327e8bf82c934d3c6e7ede7b42d341442f488
source_schema_version	1.1
theme	{"Earth Science"}